IP Issues with OOXML--Who's Afraid of the GPL?

WEBINAR:On-Demand

"Out of all the free and open source licences which are
available, there are two which are disproportionately chosen by
FOSS developers when licensing their software. Those two are the
GPL and the LGPL. Of these, the GPL is disproportionately favoured
over the LGPL.1

"If there are issues with GPL implementations then there are IP
issues with OOXML. Any assurance that excludes implementation under
these licences is just cause for the FOSS community to voice
concern..."